@misc{Heald_Kenneth_Conrad_(1888-1971)_Bulletin,
 author={Heald, Kenneth Conrad (1888-1971) and Heald, K. C. (1888-1971) and Mather, Kirtley Fletcher (1888-1978) and Mather, Kirtley F. (1888-1978)},
 copyright={Biblioteka Politechniki Gdańskiej},
 howpublished={online},
 publisher={Government Printing Office.},
 language={eng},
 type={czasopismo},
 title={Bulletin 686-M. Structure and oil and gas resources of the Osage Reservation, Oklahoma. TPS 24 and 25 N., R. 8 E},
 keywords={geologia, mineralogia, czasopisma, Oklahoma (Stany Zjednoczone ; stan)},
}